music data list print shell

main.c

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<ctype.h>
#include<sys/types.h>
#include<sys/stat.h>

typedef struct {
  char name[200];
  char artist[200];
  int rate;
}songdata;


void init(songdata array[],int n);		//ソング構造体の初期化
void sort_artist(songdata array[],int f,int l);	//アーティスト順でのソート
void sort_name(songdata array[],int max);	//曲名順でのソート
void sort_rate(songdata array[],int max);	//レートでのソート
int set_rate(songdata array[],char *name,int r,int n); //曲にレートをつける
int remove_song(songdata array[],int last); //曲を削除する
void print_data(songdata array[],int n); //songdataの内容を出力する
void add_data(songdata array[],int n);	 //listにsongdataを追加する

int main(void){
  songdata list[100];
  init(list,100);
  FILE *fp;
  char buf[200];
  int n = 0;
  struct stat st;
  int ret;
  ret = stat("list.txt",&st);
  if(0==ret){

    if((fp = fopen("list.txt","r")) == NULL){
      printf("Can't open file");
      exit(1);
    }
    char ne[200];
    char ar[200];
    int r;
    while(fgets(buf,200,fp) != NULL){
      sscanf(buf,"%s %s %d\n",ne,ar,&r);
      strcpy(list[n].name,ne);
      strcpy(list[n].artist,ar);
      list[n].rate = r;
      n++;
    }
    fclose(fp);
  }else{
    printf("Create new artist list\n");
  }

  char cmd[20];
  int error;
  while(1){
    printf("command? > ");
    scanf("%s",cmd);
    getchar();
    if(!strcmp(cmd,"artist_sort") || !strcmp(cmd,"as")){
      sort_artist(list,0,n);
      print_data(list,n);
    }else if(!strcmp(cmd,"exit") || !strcmp(cmd,"q")){
      if(ret == 0){
	error = remove("list.txt");
	if(error == -1){
	  printf("can't remove list.txt");
	  exit(1);
	}
      }
      if((fp = fopen("list.txt","a++")) == NULL){
	printf("Can't open file");
	exit(1);
      }
      int i;
      for(i=0;i<n;i++){
	fprintf(fp,"%s %s %d\n",list[i].name,list[i].artist,list[i].rate);
     }
      printf("exit.\n");
      return 0;
    }else if(!strcmp(cmd,"name_sort") || !strcmp(cmd,"ns")){
      sort_name(list,n);
      print_data(list,n);
    }else if(!strcmp(cmd,"add")){
      add_data(list,n);
      n++;
    }else if(!strcmp(cmd,"rate_sort") || !strcmp(cmd,"rs")){
      sort_rate(list,n);
      print_data(list,n);
    }else if(!strcmp(cmd,"norate")){
      int i;
      for(i=0;i<n;i++){
	if(list[i].rate == 99){
	  printf("%s %s\n",list[i].name,list[i].artist);
	}
      }
    }else if(!strcmp(cmd,"print")){
      print_data(list,n);
    }else if(!strcmp(cmd,"remove")||!strcmp(cmd,"rm")){
      int err = remove_song(list,n);
      if(err == 0){
	n--;
      }else{
	printf("Can't remove this song\n");
      }
    }else if(!strcmp(cmd,"help")||!strcmp(cmd,"h")){
      printf("Commands:\n\thelp or h\t\t:this command\n\tprint \t\t\t:print music list\n\tnorate\t\t:print no rateed music\n\tadd\t\t\t:add new music\n\tname_sort or ns\t\t:sort of name and print\n\treta_sort or rs\t\t:sort of rate and print\n\tartist_sort or as\t:sor of artist and print\n\tset_rate or sr\t\t:set rate as music\n\tremove or rm\t\t:remove music\n\texit or q\t\t: exit\n");
    }else if(!strcmp(cmd,"set_rate")||!strcmp(cmd,"sr")){
      char name[200];
      int rate;
      printf("Please Input Set Rate Music Name: ");
      scanf("%s",name);
      printf("Plaese Input Set Rate: ");
      scanf("%d",&rate);
      puts("-");
     if(0 == set_rate(list,name,rate,n)){
	printf("Seted\n");
      }else{
	printf("Can't set rate");
      }
    }else{
      printf("Command Not Found!\n");
    }
  }
  return 0;
}

void add_data(songdata array[],int n){
  char ne[200];
  char ar[200];
  printf("Please Input Music Name:");
  scanf("%s",ne);
  getchar();
  printf("Please Input Music Artist:");
  scanf("%s",ar);
  getchar();
  strcpy(array[n].name,ne);
  strcpy(array[n].artist,ar);
}


void print_data(songdata array[],int n){
  int i;
  for(i=0;i<n;i++){
    printf("%s\t%s\t%d\n",array[i].name,array[i].artist,array[i].rate);
  }
}

void init(songdata array[],int n){
  int i;
  for(i=0;i<n;i++){
    strcpy(array[i].name,"");
    strcpy(array[i].artist,"");
    array[i].rate = 99;
  }
}

void sort_artist(songdata array[],int f,int l){
  char aartist[200];
  char bartist[200];
  int i,j,k;
  songdata buf;
  int cmp;
  for(i=f;i<l-1;i++){
    for(j=i+1;j<l;j++){
      strcpy(aartist,array[i].artist);
      strcpy(bartist,array[j].artist);
      for(k=0;aartist[k];k++){
	aartist[k] = toupper(aartist[k]);
      }
      for(k=0;bartist[k];k++){
        bartist[k] = toupper(bartist[k]);
      }
      cmp = strcmp(aartist,bartist);
      if(cmp>0){
	buf = array[i];
	array[i] = array[j];
	array[j] = buf;
      }
    }
  }
}

void sort_name(songdata array[],int max){
  char aname[200];
  char bname[200];
  int i,j,k;
  songdata buf;
  int cmp;
  for(i=0;i<max-1;i++){
    for(j=i+1;j<max;j++){
      strcpy(aname,array[i].name);
      strcpy(bname,array[j].name);
      for(k=0;aname[k];k++){
        aname[k] = toupper(aname[k]);
      }
      for(k=0;bname[k];k++){
        bname[k] = toupper(bname[k]);
      }
      cmp = strcmp(aname,bname);
      if(cmp>0){
	buf = array[i];
	array[i] = array[j];
	array[j] = buf;
      }
    }
  }
}


void sort_rate(songdata array[],int max){
  int i,j;
  songdata buf;
  for(i=0;i<max;i++){
    for(j=i+1;j<max;j++){
      if(array[i].rate>array[j].rate){
	buf = array[i];
	array[i] = array[j];
	array[j] = buf;
      }
    }
  }
  int let;
  int fast=0;
  for(i=0;i<max+1;i++){
    if(fast!=array[i].rate){
      sort_artist(array,fast,i-1);
      fast = i;
    }
  }
}


int set_rate(songdata array[],char *name,int r,int n){
  int i;
  if(r<0 || 5<r){
    r = 99;
  }
  for(i=0;i<n;i++){
    if(!strcmp(array[i].name,name)){
      array[i].rate = r;
      return 0;
    }
  }
  return 1;
}


int remove_song(songdata array[],int last){
  int i;
  char name[200];
  printf("Pleas Input Del Song Name: ");
  scanf("%s",name);
  getchar();
  for(i=0;i<last+1;i++){
    if(!strcmp(array[i].name,name)){
      array[i] = array[last];
      strcpy(array[last].name,"");
      strcpy(array[last].artist, "");
      array[last].rate = 99;
      return 0;
    }
  }
  return 1;
}